s8050三极管驱动12v继电器问题 如图三极管驱动电路为什么会有问题?导致不能提供12v的电压

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\u4e00\u822c\u9009\u7528\u5de5\u4f5c2\u7684\u6a21\u5f0f\uff0c\u5f53\u7ee7\u7535\u5668\u7684\u4f9b\u7535\u7535\u538b\u4e3a12V\u65f6\uff0c\u4e5f\u662f\u53ef\u4ee5\u6b63\u5e38\u5de5\u4f5c\u7684\uff1b\u5de5\u4f5c1\u7684\u6a21\u5f0f\uff0c\u7ee7\u7535\u5668\u7684\u4f9b\u7535\u7535\u538b\u4e3a12V\u65f6\uff0c\u65e0\u8bba\u63a7\u5236\u7aef\u662f\u9ad8\u7535\u5e73\u8fd8\u662f\u4f4e\u7535\u5e73\uff0c\u7ee7\u7535\u5668\u90fd\u5de5\u4f5c\u3002

\u3000\u3000\u903b\u8f91\u4e0d\u901a\uff0c\u4e0d\u4f1a\u6709\u7535\u538b\u9001\u51fa\u3002
\u3000\u30001\u3001\u5982\u679c\u4e09\u6781\u7ba1\u4e0d\u5bfc\u901a\uff0cC\u6781\u5b58\u572812V\u7535\u538b\uff0c\u4f46\u662f\u7ee7\u7535\u5668\u4e0d\u80fd\u5438\u5408\uff0c\u89e6\u70b9\u4e0d\u63a5\u901a\uff0c\u7535\u538b\u9001\u4e0d\u51fa\u53bb\u3002
\u3000\u30002\u3001\u5982\u679c\u4e09\u6781\u7ba1\u5bfc\u901a\uff0c\u7ee7\u7535\u5668\u53ef\u4ee5\u5438\u5408\uff0c\u89e6\u70b9\u63a5\u901a\uff0c\u4f46\u662f\u6b64\u523bC\u6781\u6ca1\u6709\u7535\u538b\uff0c\u65e0\u6709\u7535\u538b\u53ef\u4ee5\u9001\u51fa\u3002

电路上看没发现问题,高电平VBE0.6V三极管应该导通了,看看12V的地和控制电平的地是通的麼。用TO92封装的8050或者9014看看可以控制麼

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